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Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023	May 31, 2023
Commitments And Contingencies [Line Items]
Liabilities	$ 279,339	$ 290,009
Lindsay, Nebraska Facility [Member]
Commitments And Contingencies [Line Items]
Current environmental remediation accrual			$ 10,600
Liabilities	$ 8,000	$ 8,000
Liabilities discounted risk Free interest rate	1.20%	1.20%
Discounted portion of liabilities	$ 9,100	$ 9,100

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